Technical Downloads and Links

Hydrology & Hydraulic Tools (Version 4.0 - Updated April 2008)  The newest version of Hydraulic Tools has the ability to model Structural Plate culverts as well as BEBO and CON/SPAN culverts.  Developed by Don Chase, Ph.D of the University of Dayton Hydraulics Laboratory, the Hydraulic Tools program uses the Federal Highway Administration’s HDS5 procedures to determine inlet and outlet control depths for these structures. Results from research conducted by Dr. Chase are incorporated into this program, as well as used by the U.S. Army Corps of Engineers’ HEC-RAS program. Download Hydraulic Tools v.4.0 (9.0 MB file size).
HEC-RAS  The Army Corps of Engineers’ Hydraulic Engineering Center (HEC) has developed the HEC-RAS software program to model natural streams and structures that are built along them. As of version 3.0, users are able to specifically model CON/SPAN® structures as culverts using the "culvert method." In the "culvert method," the CON/SPAN shape can be selected from a drop-down menu box. This allows CON/SPAN to be more easily compared to other common culvert shapes such as circular, rectangular, and elliptical. Download the latest version of HEC-RAS from the US Army Corps of Engineers website.
HY-8 Culvert Analysis The HY-8 Culvert Analysis developed by the Federal Highway Administration automates the design methods described in FHWA publications HDS-5, "Hydraulic Design of Highway Culverts," HEC-14, "Hydraulic Design of Energy Dissipaters for Culverts and Channels," and HEC-19, "Hydrology." Download HY-8 from the FHWA website
CON/SPAN® Installation Handbook Comprehensive discussion of installation of a CON/SPAN® structure including wingwalls and headwalls. Download Installation Handbook (PDF). Adobe Acrobat Reader software allows you to open, view, and print PDF documents that are located throughout our website. Download Adobe Acrobat Reader from the Adobe website.